/*
 * Copyright (C) 2005 - 2013 MaNGOS <http://www.getmangos.com/>
 *
 * Copyright (C) 2008 - 2013 Trinity <http://www.trinitycore.org/>
 *
 * Copyright (C) 2010 - 2013 ArkCORE <http://www.arkania.net/>
 *
 * This program is free software; you can redistribute it and/or modify
 * under the terms of the GNU General Public License as published by the
 * Free Software Foundation; either version 2 of the License, or (at your
 * option) any later version.
 *
 * This program is distributed in the hope that it will be useful, but WITHOUT
 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
 * more details.
 *
 * You should have received a copy of the GNU General Public License along
 * with this program. If not, see <http://www.gnu.org/licenses/>.
 */

#ifndef ARKCORE_SMARTSCRIPT_H
#define ARKCORE_SMARTSCRIPT_H

#include "Common.h"
#include "Creature.h"
#include "CreatureAI.h"
#include "Unit.h"
#include "ConditionMgr.h"
#include "CreatureTextMgr.h"
#include "Spell.h"
#include "GridNotifiers.h"

#include "SmartScriptMgr.h"
//#include "SmartAI.h"

class SmartScript
{
public:
    SmartScript();
    ~SmartScript();

    void OnInitialize(WorldObject* obj, AreaTriggerEntry const* at = NULL);
    void GetScript();
    void FillScript(SmartAIEventList e, WorldObject* obj, AreaTriggerEntry const* at);

    void ProcessEventsFor(SMART_EVENT e, Unit* unit = NULL, uint32 var0 = 0, uint32 var1 = 0, bool bvar = false, const SpellEntry* spell = NULL, GameObject* gob = NULL);
    void ProcessEvent(SmartScriptHolder& e, Unit* unit = NULL, uint32 var0 = 0, uint32 var1 = 0, bool bvar = false, const SpellEntry* spell = NULL, GameObject* gob = NULL);
    bool CheckTimer(SmartScriptHolder const& e) const;
    void RecalcTimer(SmartScriptHolder& e, uint32 min, uint32 max);
    void UpdateTimer(SmartScriptHolder& e, uint32 const diff);
    void InitTimer(SmartScriptHolder& e);
    void ProcessAction(SmartScriptHolder& e, Unit* unit = NULL, uint32 var0 = 0, uint32 var1 = 0, bool bvar = false, const SpellEntry* spell = NULL, GameObject* gob = NULL);
    ObjectList* GetTargets(SmartScriptHolder e, Unit* invoker = NULL);
    ObjectList* GetWorldObjectsInDist(float dist);
    void InstallTemplate(SmartScriptHolder e);
    SmartScriptHolder CreateEvent(SMART_EVENT e, uint32 event_flags, uint32 event_param1, uint32 event_param2, uint32 event_param3, uint32 event_param4, SMART_ACTION action, uint32 action_param1, uint32 action_param2, uint32 action_param3, uint32 action_param4, uint32 action_param5, uint32 action_param6, SMARTAI_TARGETS t, uint32 target_param1, uint32 target_param2, uint32 target_param3, uint32 phaseMask = 0);
    void AddEvent(SMART_EVENT e, uint32 event_flags, uint32 event_param1, uint32 event_param2, uint32 event_param3, uint32 event_param4, SMART_ACTION action, uint32 action_param1, uint32 action_param2, uint32 action_param3, uint32 action_param4, uint32 action_param5, uint32 action_param6, SMARTAI_TARGETS t, uint32 target_param1, uint32 target_param2, uint32 target_param3, uint32 phaseMask = 0);
    void SetPathId(uint32 id)
    {
        mPathId = id;
    }
    uint32 GetPathId() const
    {
        return mPathId;
    }
    WorldObject* GetBaseObject()
    {
        WorldObject* obj = NULL;
        if (me)
            obj = me;
        else if (go)
            obj = go;
        return obj;
    }

    bool IsUnit(WorldObject* obj)
    {
        return obj && (obj->GetTypeId() == TYPEID_UNIT || obj->GetTypeId() == TYPEID_PLAYER);
    }

    bool IsPlayer(WorldObject* obj)
    {
        return obj && obj->GetTypeId() == TYPEID_PLAYER;
    }

    bool IsCreature(WorldObject* obj)
    {
        return obj && obj->GetTypeId() == TYPEID_UNIT;
    }

    bool IsGameObject(WorldObject* obj)
    {
        return obj && obj->GetTypeId() == TYPEID_GAMEOBJECT;
    }

    bool ConditionValid(Unit* u, int32 c, int32 v1, int32 v2, int32 v3)
    {
        if (c == 0)
            return true;
        if (!u || !u->ToPlayer())
            return false;
        Condition cond;
        cond.mConditionType = ConditionType(uint32(c));
        cond.mConditionValue1 = uint32(v1);
        cond.mConditionValue1 = uint32(v2);
        cond.mConditionValue1 = uint32(v3);
        return cond.Meets(u->ToPlayer());
    }

    void OnUpdate(const uint32 diff);
    void OnMoveInLineOfSight(Unit* who);

    Unit* DoSelectLowestHpFriendly(float range, uint32 MinHPDiff);
    void DoFindFriendlyCC(std::list<Creature*>& _list, float range);
    void DoFindFriendlyMissingBuff(std::list<Creature*>& _list, float range, uint32 spellid);

    void StoreTargetList(ObjectList* targets, uint32 id)
    {
        if (!targets)
            return;

        if (mTargetStorage->find(id) != mTargetStorage->end())
            delete (*mTargetStorage)[id];

        (*mTargetStorage)[id] = targets;
    }

    bool IsSmart(Creature* c = NULL)
    {
        bool smart = true;
        if (c && c->GetAIName() != "SmartAI")
            smart = false;

        if (!me || me->GetAIName() != "SmartAI")
            smart = false;

        if (!smart)
            sLog->outErrorDb("SmartScript: Action target Creature(entry: %u) is not using SmartAI, action skipped to prevent crash.", c ? c->GetEntry() : (me ? me->GetEntry() : 0));
        return smart;
    }

    bool IsSmartGO(GameObject* g = NULL)
    {
        bool smart = true;
        if (g && g->GetAIName() != "SmartGameObjectAI")
            smart = false;

        if (!go || go->GetAIName() != "SmartGameObjectAI")
            smart = false;
        if (!smart)

            sLog->outErrorDb("SmartScript: Action target GameObject(entry: %u) is not using SmartGameObjectAI, action skipped to prevent crash.", g ? g->GetEntry() : (go ? go->GetEntry() : 0));
        return smart;
    }

    ObjectList* GetTargetList(uint32 id)
    {
        ObjectListMap::iterator itr = mTargetStorage->find(id);
        if (itr != mTargetStorage->end())
            return (*itr).second;
        return NULL;
    }

    GameObject* FindGameObjectNear(WorldObject* pSearchObject, uint32 guid) const
    {
        GameObject* pGameObject = NULL;

        CellPair p(Trinity::ComputeCellPair(pSearchObject->GetPositionX(), pSearchObject->GetPositionY()));
        Cell cell(p);
        cell.data.Part.reserved = ALL_DISTRICT;

        Trinity::GameObjectWithDbGUIDCheck goCheck(*pSearchObject, guid);
        Trinity::GameObjectSearcher<Trinity::GameObjectWithDbGUIDCheck> checker(pSearchObject, pGameObject, goCheck);

        TypeContainerVisitor<Trinity::GameObjectSearcher<Trinity::GameObjectWithDbGUIDCheck>, GridTypeMapContainer> objectChecker(checker);
        cell.Visit(p, objectChecker, *pSearchObject->GetMap());

        return pGameObject;
    }

    Creature* FindCreatureNear(WorldObject* pSearchObject, uint32 guid) const
    {
        Creature* crea = NULL;
        CellPair p(Trinity::ComputeCellPair(pSearchObject->GetPositionX(), pSearchObject->GetPositionY()));
        Cell cell(p);
        cell.data.Part.reserved = ALL_DISTRICT;

        Trinity::CreatureWithDbGUIDCheck target_check(pSearchObject, guid);
        Trinity::CreatureSearcher<Trinity::CreatureWithDbGUIDCheck> checker(pSearchObject, crea, target_check);

        TypeContainerVisitor<Trinity::CreatureSearcher<Trinity::CreatureWithDbGUIDCheck>, GridTypeMapContainer> unit_checker(checker);
        cell.Visit(p, unit_checker, *pSearchObject->GetMap());

        return crea;
    }

    ObjectListMap* mTargetStorage;

    void OnReset();
    void ResetBaseObject()
    {
        if (meOrigGUID)
        {
            if (Creature * m = HashMapHolder<Creature>::Find(meOrigGUID))
            {
                me = m;
                go = NULL;
            }
        }
        if (goOrigGUID)
        {
            if (GameObject * o = HashMapHolder<GameObject>::Find(goOrigGUID))
            {
                me = NULL;
                go = o;
            }
        }
        goOrigGUID = 0;
        meOrigGUID = 0;
    }

    //TIMED_ACTIONLIST (script type 9 aka script9)
    void SetScript9(SmartScriptHolder& e, uint32 entry);
    Unit* GetLastInvoker();
    uint64 mLastInvoker;

private:
    void IncPhase(int32 p = 1)
    {
        if (p >= 0)
            mEventPhase += (uint32) p;
        else
            DecPhase(abs(p));
    }

    void DecPhase(int32 p = 1)
    {
        mEventPhase -= (mEventPhase < (uint32) p ? (uint32) p - mEventPhase : (uint32) p);
    }
    bool IsInPhase(uint32 p) const
    {
        return (1 << (mEventPhase - 1)) & p;
    }
    void SetPhase(uint32 p = 0)
    {
        mEventPhase = p;
    }

    SmartAIEventList mEvents;
    SmartAIEventList mInstallEvents;
    SmartAIEventList mTimedActionList;
    bool mResumeActionList;
    Creature* me;
    uint64 meOrigGUID;
    GameObject* go;
    uint64 goOrigGUID;
    AreaTriggerEntry const* trigger;
    SmartScriptType mScriptType;
    uint32 mEventPhase;

    uint32 mInvinceabilityHpLevel;UNORDERED_MAP<int32, int32> mStoredDecimals;
    uint32 mPathId;
    SmartAIEventList mStoredEvents;
    std::list<uint32>mRemIDs;

    uint32 mTextTimer;
    uint32 mLastTextID;
    uint64 mTextGUID;
    Creature* talker;
    bool mUseTextTimer;

    SMARTAI_TEMPLATE mTemplate;
    void InstallEvents();

    void RemoveStoredEvent (uint32 id)
    {
        if (!mStoredEvents.empty())
        {
            for (SmartAIEventList::iterator i = mStoredEvents.begin(); i != mStoredEvents.end(); ++i)
            {
                if (i->event_id == id)
                {
                    mStoredEvents.erase(i);
                    return;
                }
            }
        }
    }
    SmartScriptHolder FindLinkedEvent (uint32 link)
    {
        if (!mEvents.empty())
        {
            for (SmartAIEventList::iterator i = mEvents.begin(); i != mEvents.end(); ++i)
            {
                if (i->event_id == link)
                {
                    return (*i);
                }
            }
        }
        SmartScriptHolder s;
        return s;
    }
};

#endif
